Gas stove



F. A. GERCICH Aug. 4,1931.

GAS STOVE Filed April 26, 1927 INVENTOR. FREDERICK II. 6ERC/CH m zzfl MM A TT ORNEY.

Patented Aug. 4, 1931 UNITED STATES PATENT OFFICE FREDERICK A. GEBOICH, 01' OAKLAND, CALIFORNIA, ASSIGNOR T WEB-EBAY COI- PANY, OI OAKLAND, CALIFORNIA, A CORPORATION 01' CALII'OBNIA.

GAB STOVE Application filed li ru as,

My invention relates generally to a closed top gas stove having means provided in the top-gas-burner chamber thereoffor controlling the supply of secondary airto the burners in said chamber, and more particularly to the structure of said means and the suprt of said burner in the chamber.

An object of the invention is to provide a gas stove structure in .which the means. for controlling the secondary air supply to the burners provides the support for the urners.

Another object of the invention is to provide a structure whereby the independent and ready removal'and installation of the 1B burners is provided for.

The invention possesses other objects and features of advantage, some of which, with the foregoing, will'be set forth in the following description of the preferred form of the .20 invention which is illustrated in the drawings accompanying and forming part of the specification. It 1s to be understood, however, that variations in the showing made by the said drawings and description may be 2 ado ted within the scope of the invention as set orth in the claims.

Referring to said drawings, Figure 1 is a fragmentary plan view of a stove embodying the structure of my invention and. havin the cooking-top lid-platethereof removedl Figure 2 is a sectionalview taken on the line 2--2 in Figure 1.

Fi re 3is an enlarged fragmentary sectiona view taken on the line 33 in Figure 1.

Figure 4 is a view similar to Fi re 3 showing a different embodiment of the mvention.

As herewith particularly disclosed, the means of my invention is,incorporated with a gas stove 6 havin a cooking top 7 beneath which is defined a burner compartment 8 in which are suitably mounted front and back burners 9 and 11 respectively. The compartment 8, it will benoted, is defined between side walls 12, a frontwall 13, aback wall 14, a bottom wall 15 and the cooking top' 7. Fresh air is arranged to-be admitted to said compartment through one of said walls and 60 the vitia-ted air is arranged to escape from the 1827. Serial No, 186,810.

compartment at a point adjacent the cooking; top-as here shown, the side and bottom walls of the compartment are imperforate, while the front and back walls are perforated to provide respectively for the ingrem and egress of fresh air and vitiated air. The cooking top 7 is of a usual structure and comprises a removable lid-carrying section 16 mounted on a rim section 17 forming a fixed part of the stove, it being noted that the section 16 overlies the various burners of the compartment 8. Preferably, and as here shown, the burners 9 and 11 are of'a type having their jets projected upwardly from the top surfaces 18 thereof.

.Mounted in the compartment 8 is a member 19, such member having'a bottom plate portion 21 disposed slightly above the plane of the burner surfaces 18, and provided with circular openin s 20 over the burners to allow the protrusion t erethrough of the flame jets of the burnersin practice, it has been found that the positioning of the late 21 about one-eighth of an inch above t e burner surfaces 18 is best. As here shown, the plate 19 is of substantially the same size and shape as the top section 16 and is provided at the edges thereof which are respectively opposite the side walls 12 and front wall 13 with wall portions 22 extendin upwardly of the plate portion 21. Prefera l the walls 22 are coterminous and extend to and against the top rim section 17 and are secured thereto in any suitable manner whereby they serve to entirely support the member 19 in the compart ment with plate 21 in its operative position. The plate 21 referably extends to and against the per orated back wall 14 of the compartment, it being noted that when, as here shown, the vent opening23 of such wall extends below the level of the plate 21, a back edge portion 24 of the latter is deflected downwardly to re 'ster with the bottom edge of the openmg. n this manner, the member 19 cooperates with the cooking to to define therewith a heating chamber 25 aving its only inlets for air at and around the burners 9 and 11 and its only exit for air at the vent o ning 23, whereby air may enter the cham- 7 her 25 only 9 through the plate perforations I which seat portions lateral extensions 29 rovided at the top of the wall portions 21 0 the member 19 are arranged to be disposed. In this manner the removable support of the member 19 from the rim section 17 is provided independently of and does not interfem-with the mounting of the top section 16 thereon;

Preferably, and as here shown, a conduit member 31 1s mounted in each of the openings 20 of plate 21, and is so formed that air passing through the passage provided there,

wi guided into the flame space of t e jets above the different burners. In the present embodiment of the invention in which the burners shown are provided with arms 32 radiating from a common center and havin rows of jets 33 extending longitudinally t erealong, the conduit passage 34 is of the general outline of the burner and is formed with portions 36 overlying the different burner arms'32. Preferably, and as here shown, the passage portions 36 are no wider at their inlet ends than the adjacent portions of the arms which they overlie, and may, to advan'ta be even narrower. In this manner, the an passing upwardly around the burner arms and into the passage is directed transversely against the jet flames, whereby all of the oxygen of the air passing through the conduit is made available at the burner flames to insure complete combustion thereat. Preferabl and 'as here shown, the exit end of eac passage 34 is disposed substantially at the plane of the tips of the combustion cones of the burner flames when such are of full size, so that vitiated air from one burner may not interfere with the combustion at another burner, it being noted that the flame space of the burner is thus defined in the conduit passage 34 and immediately below it.

As herewith. particularly disclosed, each conduit 31 comprises a base portion 37 perforated to rovide the lower end of the passage 34 and having a continuous wall 38 of substantially uniform thickness extending. upwardly from around its perforation to define the passage 34, it being noted that the folds of said walls define arm portions 39 thereof which provide the passage portions 3.6 overlying the different burner arms. In this manner, the conduits are arranged to be radially inwardlyfor engagement with notches 42 provided in the edges of the conduit base portions 37 The burners, it will be noted, are also arranged to besupported from the plate 21, and, as particular disclosed in Figures 1, 2 and 3, are provided with one or more webs 43 connectin adjacent arms 32 thereof whereby they mayie secured to the members 31 as by bolts 44, spacing bosses 45 being provided on the members 31 whereby the burners and members may be properly spaced apart. If

desired, the burners may be supported directly from the partitioning member, as is disclosed in the embodiment of Figure 4. In the latter embodiment, lugs 46 are provided on the burners 47, which lugs are arranged to be disposed in depressed porti'ons48 of the seats 49 rovided in plate 21 for the reception of t e bases 51 of the conduit members 31'. To prevent a. relative rotative displacement of the members 31 with respect to the burners, the former are preferably provided with depending lugs 52 which are arranged to engage between adjacent burner arms 32' when the members are properly disposed with respect to the burners. .In this manner, separate su porting means for the burners are rendere unnecessary.

In the present embodiment of the invention, the partitioning member is arranged to support a lighter 54 of-the type whereby tongues of flame may be simultaneously directed therefrom over the various burners. Accordingly, and as particularly shown in the embodiment of Figures 1 to 3 inclusive, the member 19 is perforated as at 54' to receive the lighter 54 in position to discharge toward the various burners. Owing to the fact that the flame jets are above the plane of the plate 21, however, it is obviously desir- 11'5 able to provide special conduits leading from the lighter toward theburners and discharging through the conduits 31 at the appropriate level. As here shown, the necessary conduits are provided directly in the plate 21 by forming the plate with generally semicylindrical grooves 55 extending upwardly of the lower plane of the plate 21 and opening downwardly, such grooves terminating at the conduit perforation and opposite conduit arms 39 which are appropriately perforated to complete the provision of open passages from the lighter to the burners. In this manner, open passages to the chamber 25 from chamber 26 are avoided,.as well as tion 64 which include the extremities of the the provision of separate conduit parts for the lighter installation.

It will now be noted that the mountings provided for the conduits and burners are arranged to permit the movement of the burners to and from their operative positions through the perforations 20. But when, as is desirable and usual, the chamber 26is relatively shallow, the' relatively long lead pipes 51 of the rear burners which form integral parts of the burner structures would serve to prevent the insertion or removal of the burner while the member 21 is in its place. And, furthermore, .an adjacent oven wall 56 or the splasher back 57 of the stove would still further hinder the insertion or removal of a rear burner. provided for facilitating the removal or insertion of a rear burner through a perforation 20, and as here shown, such means comprises forming the member 19 with front and rear sections 64 and 66 respectivel whereby, with the rear section 66 only in p ace, a rear burner may be removed or operatively positioned by moving it substantially vertically with respect to its operative position. Preferably, and as here shown, the member 19 is divided transverselythereof to define the sections 64 and 66, with the line of division lying generally forwardly of the rear burners and passing through each of the rear perforations 20.

Preferably, and as here' shown, the abutting edge portions 67 and 68 of the sections 64 and 66 respectively-are arranged to overlap each other in such manner that a certain degree of mutual support is provided by the sections when they are engaged. As here shown, the forward edge portion 69 of the rear section 66 which is defined between the air of rear perforations 20 is arranged to e disposed in a seat 71 provided in the opposed edge portions 72 of the front section 64, the edge portions 7 3 of the section 64 which define parts of the perforations 20 .are provided with portions 74 of the seat 41, and the remaining rear edge portions of the section 64 are arranged to be disposed in seats 76 provided in the opposed front edge portions 77 of the rear section 66. It will, of course, now be obvious that the gap thus provided in the seat 41 when the section 64 is removed from its cooperative engagement with section 66 need only be Wide enough to permit the lowering of the burner lead pipe 51 theiethrough. Preferably, and as here shown, the seat portions 74 are provided in those portions of the seclighter conduits 55, which conduit ends are here shown disposed substantially midway of the front section edge portions 73 in which seat portions 74 are provided-in this manner, the lighting means is arranged to be carried entirely 'by the front section 64. And

Means are accordingly it will be further noted that the line of division between the sections is preferably carried as far forwardly as possible whereby the front section may be of the least possible, weight. n I p Assembly of the structure described is arranged to be effected in a simple manner. With the lid plate 16 removed from the stove top, the section' 66 is mounted in the rim section 17'by disposing its extensions 29 in theseat portions 27. Having secured conduit members 21 to the rear burners 11, these burners are then lowered into the compartment 8 to engage the conduit base portions 39 in the seats 41; The section 64 is then placed in position, it being noted that its rear edge must be engaged with cooperating. front edge of section 66 and the conduits of the rear burners before the front of the section can be lowered to its set position. Insertion of the front burners and their conduits is now permitted, after which ing; Removal of the burners would, of course, be effected by a reversal of the order of the before described steps. It will be noted that with the embodiment of Figure 4, the operative disposition of all of the burn ers in seated position is arranged to be effected independently of the conduits, the latter being placed in position after the burners and sections 64 and 66' are in place.

the rear burners with the necessary air for use thereat. In this manner, the circulation of air induced along the rear of plate 21 will provide a cooling of the plate and chamber and a corresponding preheating of such air;

I claim:

1. In a stove having a top-gas-burner compartment defined beneath a closed cooking top, a burner in said compartment, a member supported from said-cooking top and disposed above'the level of said burner to divide said compartment into upper and lower chambers and provided with a perforation arranged to overlie said burner, a conduit member secured to said burner and supporting the burner therebeneath, removably mounted in said perforation and provided with a conduit extending upward therefrom whereby the air flowing upwardly through said perforation will be directed entirely into the combustion space immediately above said burner.

' 21' In astove having a top-gas-burner comthe lid plate 16 may be disposed in its open-{ partment defined beneath a closed cooking'top and provided with inlet and vent openings; a rear burner in said compartment having a feed pipe; a member dividing said compartfeed pipe; a member dividing said compart: spectively provided with saidinlet and vent Openings, said member havinga perforation therein overlying said burner and large enough to permit the insertion of said burner therethrough, and said member being formed with separable forward and .rear sections, 'a-' portion ofthe rear edge of the forward section extending to said perforation and above the feed pipe to said burner.

3. In a stove having a top-gas-burner compartment defined beneath a closed cooking top and provided with inlet and vent openings; front and rear burners in said compartment and having a feed pipe; a member dividing said compartment into lower and upper chambers respectively provided with said inlet and vent openings, said member having perforations therein overlying said burners and providing substantially the sole inlet for the flow of air into said upper chamber, and said member being divided transversely thereof into separable sections with the line of division passing through the perforation thereof overlying said rear burner.

4. In a stove having a top-gas-burner compartment defined beneath a closed cooking top, front and rear gas burners in said compartment each having a feed pipe, a member dividing said compartment into upper and lower chambers and providing perforations arranged for the insertion of said burners therethrough from above, and means on said member for supporting said burners beneath said perforations, said member being formed with cooperating sections having the cooperating edges thereof define a line exten ing generally transversely of the member between the front and back perforations thereof and includin portions of the rear perforation edges an overlying the feed pipes to the rear burners;

5. In a stove having a top-gas-burner compartment defined beneath a closed cooking top and provided with inlet and vent openings; front and rear burners in said compartment; a member dividing said compartment into lower and up or chambers respectively provided with sai inlet and vent openings, said member having perforations therein overlying said burners and said member 'being formed with, cooperating front and rearsections having the cooperating edges thereofarranged, when in assembled relation, to cooperate to provide the perforations associated with said rear burners, and lighter means for said burners carried entirely on said front sections of the member.

6. In a stove having a top-gas-burner compartment defined beneath a closed cooking top and provided with inlet and vent open- 1 '7. In a stove having a top gas burner compartment defined beneath a closed cooking top and provided with a rim arranged to support a removable top member, front and rear burners removably disposed in said compartment, and a member overlying the burners, dividing said compartment into upper and lower chambers and provided with openings at points above the burners, said dividing member being formed of a separable rear section to facilitate the removal of the rear burners. I r

In testimon whereof I have hereunto set my hand at akland, California, this 22nd day of April, 1927.

FREDERICK A. GERCICH. 

